A throttle mechanism with high damping effect and a mower

Abstract

The utility model discloses a throttle mechanism and mower with high -efficient shock attenuation effect relates to mower technical field, including support and the throttle component of installing on support, be equipped with the shock attenuation connecting structure of connecting with external component on the support, the shock attenuation connecting structure includes fastener and elastic damping part, the mounting hole is seted up on the support, the elastic damping part is embedded in the mounting hole, the through hole that the fastener passes through is seted up to the elastic damping part along the axial direction, the fastener is connected with external component after the through hole is worn, the axial length of elastic damping part is greater than the axial depth of mounting hole, makes the axial both ends of elastic damping part respectively convex to both side end surfaces of mounting hole, and the convex part forms the annular buffer portion that extends along the radial direction outward, thereby alleviating the vibration impact that sensitive component such as electric push rod suffers, reduces the component loss risk that leads to the continuous vibration.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically to a throttle mechanism and lawnmower with high-efficiency shock absorption. Background Technology

[0002] During lawnmower operation, the throttle mechanism, as a key component controlling power output, directly affects the equipment's operating efficiency and lifespan. In existing technologies, the throttle assembly of lawnmowers often uses a rigid connection or a simple elastic pad connection with the frame (or lawnmower body, etc.). This type of structure has significant limitations in suppressing vibration transmission.

[0003] On the one hand, in traditional connection structures, the damping elements are mostly single-directional buffer designs, which are difficult to cope with multi-directional composite vibrations caused by uneven ground and changes in blade cutting resistance during lawn mowing operations. This results in vibration energy being easily transmitted directly to throttle control components (such as push rods, sensors, etc.) through the connection parts.

[0004] On the other hand, although some improved structures have added elastic elements, the unreasonable way they are matched with the mounting base (such as excessive rigidity or insufficient elastic deformation space) makes it impossible for the damping effect of the shock absorption elements to be fully utilized. After long-term use, vibration fatigue can easily lead to loose connections or component failure, which in turn affects the throttle control accuracy and increases equipment maintenance costs.

[0005] Therefore, considering the operating conditions of lawnmowers, designing a throttle mechanism that can achieve efficient vibration attenuation through structural optimization and has stable and reliable assembly has become a key requirement for improving the overall performance of the equipment. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A throttle mechanism with high-efficiency shock absorption includes a bracket and a throttle assembly mounted on the bracket, wherein the bracket is provided with a shock-absorbing connection structure for connecting to external components.

[0008] The shock-absorbing connection structure includes fasteners and elastic shock absorbers. The bracket has mounting holes, the elastic shock absorbers are fitted into the mounting holes, and the elastic shock absorbers have through holes along the axial direction for the fasteners to pass through. After the fasteners pass through the through holes, they are connected to external components.

[0009] The axial length of the elastic damping member is greater than the axial depth of the mounting hole, so that the two ends of the elastic damping member protrude from the two end faces of the mounting hole respectively, and the protruding part forms an annular buffer portion extending radially outward.

[0010] As a further embodiment of this utility model: the elastic damping component is made of elastic material, its outer peripheral surface forms a fixed fit with the wall of the mounting hole, and its inner peripheral surface forms a clearance fit or elastic contact fit with the outer peripheral surface of the fastener.

[0011] As a further embodiment of this utility model: the elastic damping component includes an integrally formed main body and an annular buffer portion, the main body is fitted into the mounting hole, and the annular buffer portion extends radially outward from both axial ends of the main body;

[0012] The mounting hole is a non-closed hole with an axial opening, the width of which is less than the maximum radial dimension of the mounting hole, and the width of which is less than the radial dimension of the main body.

[0013] The main body is inserted into the mounting hole through the opening in an elastic deformation manner, and after assembly, the inner end face of the annular buffer part forms a fitting limit with the two side surfaces of the bracket.

[0014] As a further embodiment of the present invention: the annular buffer portion includes an upper annular buffer portion and a lower annular buffer portion;

[0015] The end face of the upper annular buffer portion abuts against the end face of the limiting head of the fastener, and the end face of the lower annular buffer portion is used to abut against external components.

[0016] As a further embodiment of this utility model: the inner wall of the through hole of the elastic damping member is provided with a plurality of elastic ribs distributed circumferentially, the elastic ribs extend radially and protrude from the inner wall surface of the through hole, and the elastic ribs form an elastic abutment with the outer peripheral surface of the fastener.

[0017] This utility model also proposes a lawnmower, including the throttle mechanism with high-efficiency shock absorption effect described above.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The annular buffer portions at both ends of the elastic damper contact the fastener limiting head and the external component, respectively. When the lawnmower vibrates during operation, the upper annular buffer portion can absorb the vibration energy transmitted from the fastener (throttle assembly) through its own elastic deformation, while the lower annular buffer portion can buffer the vibration input from the external component, forming a two-way vibration attenuation path. This design can significantly reduce the intensity of axial vibration transmission to the bracket and throttle assembly, thereby reducing the vibration impact on sensitive components such as the electric push rod and reducing the risk of component wear caused by continuous vibration.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention with the shock-absorbing connection structure removed;

[0025] Figure 4 This is a schematic diagram of the structure of the elastic shock absorber in this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0027] The reference numerals and names in the figure are as follows:

[0028] 1. Bracket; 2. Throttle assembly; 3. Shock-absorbing connection structure; 4. Fastener; 5. Elastic shock absorber; 6. Mounting hole; 7. Through hole; 8. Upper annular buffer part; 9. Lower annular buffer part; 10. Main body; 11. Opening. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 The throttle mechanism with high-efficiency shock absorption provided by this utility model is applied to a vertical axis lawnmower. Its core lies in the multi-directional vibration buffering of key components such as the electric push rod in the throttle assembly 2 through structural design, thereby ensuring its working stability and service life.

[0031] The throttle mechanism includes a bracket 1, which serves as the basic mounting carrier. The throttle assembly 2 is fixedly mounted on the bracket 1. The electric push rod in the throttle assembly 2 is composed of an electric motor, which is easily affected by machine vibration during lawnmower operation. To address this, a shock-absorbing connection structure 3 is provided on the bracket 1. This shock-absorbing connection structure 3 is used to connect the entire throttle mechanism to external components (such as the lawnmower frame or lawnmower body), and at the same time, it forms a multi-dimensional buffer zone at the connection point to reduce the transmission of vibration to the electric push rod.

[0032] The damping connection structure 3 consists of fasteners 4 and elastic damping components 5. Mounting holes 6 are correspondingly provided on the bracket 1, and the elastic damping component 5 is embedded in these holes 6, forming the assembly base with the bracket 1. A through hole 7 is provided through the elastic damping component 5 along its axial direction. The diameter of the through hole 7 is adapted to the diameter of the fastener 4 rod, allowing the fastener 4 to pass through. After the fastener 4 (such as a bolt) passes through the through hole 7, one end forms a fixed connection with an external component, while the other end uses its own limiting head (i.e., the bolt head) to axially limit the elastic damping component 5.

[0033] The elastic damping component 5 is made of a material with elastic deformation capability (such as rubber, silicone, etc.), and its axial length is set to be greater than the axial depth of the mounting hole 6 (i.e., the thickness of the bracket 1). Therefore, when the elastic damping component 5 is installed in the mounting hole 6, its two axial ends will naturally protrude from the two end faces of the mounting hole 6, and the protruding parts extend radially outward to form an annular buffer portion. This annular buffer portion and the main body 10 of the elastic damping component 5 are integrally formed to constitute a complete elastic damping component 5, so that the elastic material forms a continuous distribution pattern in both the axial and radial directions, which can form a 360-degree wrap-around buffer for vibrations in different directions without dead angles, and achieve multi-directional vibration attenuation.

[0034] The outer peripheral surface of the elastic damper 5 fits tightly against the wall of the mounting hole 6, forming a fixed fit to ensure that the elastic damper 5 will not undergo unexpected circumferential or radial movement within the mounting hole 6. The inner peripheral surface of the damper 5 can be configured with a clearance fit (leaving deformation space through the clearance) or an elastic contact fit (achieving buffering through elastic compression of the contact surface) depending on the actual damping requirements. This overall structural design allows the elastic material to provide deformation buffering in multiple directions, thereby coping with vibration input from different directions, such as providing 360-degree coverage without blind spots.

[0035] Specifically, the main body 10 of the elastic damper 5 is a columnar structure adapted to the mounting hole 6 and is embedded in the mounting hole 6; the annular buffer extends radially outward from both ends of the main body 10, forming a structure similar to a "flange". Correspondingly, the mounting hole 6 is a non-closed hole (such as a C-shaped hole) with an axial opening 11. The opening 11 is axially continuous, and its width is smaller than the maximum radial dimension of the mounting hole 6, and also smaller than the radial dimension of the main body 10. This size design makes it impossible for the main body 10 to be directly inserted through the opening 11. An external force must be applied to cause the elastic damper 5 to undergo elastic deformation (radial compression of the main body 10) before it can be inserted into the mounting hole 6 through the opening 11. After assembly, the elastic damper 5 recovers some deformation, and the outer peripheral surface of its main body 10 fits tightly against the inner wall of the mounting hole 6. At the same time, the inner end face of the annular buffer forms a fitting limit with the two side surfaces of the bracket 1, further restricting the axial displacement of the elastic damper 5.

[0036] The annular buffer section can be divided into an upper annular buffer section 8 and a lower annular buffer section 9. The upper annular buffer section 8 is located on the side of the bracket 1 near the limiting head of the fastener 4, and its end face directly abuts against the end face of the limiting head of the fastener 4. The lower annular buffer section 9 is located on the side of the bracket 1 away from the limiting head of the fastener 4, and its end face is used to abut against the surface of external components. When subjected to axial vibration, the upper annular buffer section 8 and the lower annular buffer section 9 can absorb vibration energy through their own elastic deformation, reducing the transmission of vibration to the throttle assembly 2, especially the electric push rod. The tight fit between the main body 10 and the mounting hole 6 can achieve buffering through the deformation of the outer peripheral surface when radial vibration occurs.

[0037] Understandably, after the elastic damping component 5 is installed in the mounting hole 6, it is limited by the fit between the fastener 4 and the mounting hole 6 under the action of the fastener 4, so that it cannot come out of the mounting hole 6, thereby ensuring the fixed fit between the elastic damping component 5 and the mounting hole 6.

[0038] Furthermore, in one embodiment, the inner wall of the through hole 7 of the elastic damper 5 is provided with multiple elastic ribs (not shown). These elastic ribs are evenly spaced circumferentially and protrude radially inward from the inner wall surface of the through hole 7. When the fastener 4 is inserted into the through hole 7, the elastic ribs form a point-contact elastic abutment with the outer circumferential surface of the fastener 4, which not only ensures the connection stability between the elastic damper 5 and the fastener 4, but also absorbs radial vibration energy through the radial deformation of the ribs. This combination of elastic contact of the inner circumferential surface, fixed fit of the outer circumferential surface, and deformation buffering of the axial annular buffer portion enables the elastic damper 5 to form a synergistic damping effect in different directions, thereby comprehensively coping with the complex vibrations generated during lawn mowing operations.

[0039] This utility model also relates to a vertical axis lawnmower, which includes the aforementioned throttle mechanism with high-efficiency shock absorption. Through the shock-absorbing connection structure 3 of the throttle mechanism, the impact of vibrations generated during lawn mowing on the electric push rod in the throttle assembly 2 can be effectively reduced, thereby improving the stability of equipment operation and the durability of the electric push rod.

[0040] In summary, the annular buffer portions at both ends of the elastic damping component 5 contact the limiting head of the fastener 4 and the external components, respectively. When the lawnmower vibrates during operation, the upper annular buffer portion 8 can absorb the vibration energy transmitted from the fastener 4 (throttle assembly 2) through its own elastic deformation, while the lower annular buffer portion 9 can buffer the vibration input from the external components, forming a bidirectional vibration attenuation path. This design can significantly reduce the intensity of axial vibration transmission to the bracket 1 and the throttle assembly 2, thereby reducing the vibration impact on sensitive components such as the electric push rod and reducing the risk of component wear caused by continuous vibration.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A throttle mechanism with high-efficiency shock absorption, characterized in that, It includes a bracket and a throttle assembly mounted on the bracket, the bracket being provided with a shock-absorbing connection structure for connecting to external components; The shock-absorbing connection structure includes fasteners and elastic shock absorbers. The bracket has mounting holes, the elastic shock absorbers are fitted into the mounting holes, and the elastic shock absorbers have through holes along the axial direction for the fasteners to pass through. After the fasteners pass through the through holes, they are connected to external components. The axial length of the elastic damping member is greater than the axial depth of the mounting hole, so that the two ends of the elastic damping member protrude from the two end faces of the mounting hole respectively, and the protruding part forms an annular buffer portion extending radially outward.

2. The throttle mechanism with high-efficiency shock absorption effect according to claim 1, characterized in that, The elastic damping component is made of elastic material, and its outer peripheral surface forms a fixed fit with the wall of the mounting hole, while its inner peripheral surface forms a clearance fit or elastic contact fit with the outer peripheral surface of the fastener.

3. The throttle mechanism with high-efficiency shock absorption effect according to claim 1, characterized in that, The elastic damping component includes an integrally formed main body and an annular buffer portion. The main body is fitted into the mounting hole, and the annular buffer portion extends radially outward from both axial ends of the main body. The mounting hole is a non-closed hole with an axial opening, the width of which is less than the maximum radial dimension of the mounting hole, and the width of which is less than the radial dimension of the main body. The main body is inserted into the mounting hole through the opening in an elastic deformation manner, and after assembly, the inner end face of the annular buffer part forms a fitting limit with the two side surfaces of the bracket.

4. A throttle mechanism with high-efficiency shock absorption according to any one of claims 1-3, characterized in that, The annular buffer section includes an upper annular buffer section and a lower annular buffer section; The end face of the upper annular buffer portion abuts against the end face of the limiting head of the fastener, and the end face of the lower annular buffer portion is used to abut against external components.

5. A throttle mechanism with high-efficiency shock absorption as described in claim 1, characterized in that, The inner wall of the through hole of the elastic damping component is provided with a plurality of elastic ribs distributed circumferentially. The elastic ribs extend radially and protrude from the inner wall surface of the through hole. The elastic ribs form an elastic abutment with the outer peripheral surface of the fastener.

6. A lawnmower, characterized in that, Including the throttle mechanism with high-efficiency shock absorption as described in any one of claims 1-5.

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